21301012033 has 8 divisors (see below), whose sum is σ = 24377505152. Its totient is φ = 18232891776.

The previous prime is 21301012027. The next prime is 21301012037. The reversal of 21301012033 is 33021010312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21301012033 is a prime.

It is a super-2 number, since 2×21301012033² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21301011998 and 21301012016.

It is not an unprimeable number, because it can be changed into a prime (21301012037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2087760 + ... + 2097937.

It is an arithmetic number, because the mean of its divisors is an integer number (3047188144).

Almost surely, 2^21301012033 is an apocalyptic number.

It is an amenable number.

21301012033 is a deficient number, since it is larger than the sum of its proper divisors (3076493119).

21301012033 is an equidigital number, since it uses as much as digits as its factorization.

21301012033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4186431.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21301012033 its reverse (33021010312), we get a palindrome (54322022345).

The spelling of 21301012033 in words is "twenty-one billion, three hundred one million, twelve thousand, thirty-three".